fbi agents did a search of her north carolina home with her okay. and took 8 to 10 boxes with them. she's not talking and neither is petraeus, but her father is. he told the new york daily news, there's more. quote, this is about something else entirely and the truth will come out. there is a lot more that is going to come out. and what that is, i'm sure we'll find out soon. we're in northwest d.c. tonight, debra alfarone, 9 news. >> k debra, great demonstration. while the story of david petraeus' affair gets more complex by the hour, there's still one very basic question a lot of people are asking. why did he do it? there have been plenty of powerful men from bill clinton to anthony wiener who betrayed their families, marred stellar careers. why do men with so much to lose do this? fisher is an author of why we stray. >> it's very high testosterone. anybody who fights for rank as these men have are going to be high on testosterone. so that will trigger the sex drive. they're away from home a lot. they've got a lot of opportunities. a lot of women really like a high-ranking men. if